Welding apparatus.



E. DGLENSKY- WELDING APPARATUS.

APPLICATION FILED I'EELZ, 1910,

Pateud Oct. 29, 191.2.

s sHEETssHBBT 1.

E. DOLENSKY.

WELDING APPARATUS.

APPLIGATION FILED PBB.2,1910.

Patented Oct. 29, 1912.

3 SHEETS-SHEET 2.

- E. DQLENSKY,

WELDING APPARATUS.

APPLIUATON FILED BB.2V, 1910.

Patented Got. 29, 1912.

3 SHEETS-SHEET 3.

v Zy

j `is a specification. 1o

,mei-ing or `by pressing between rollers.

'strong and heavy vibration set up inju- Unirse sfra'rns rarnu'r onirica.;

EUGEN DOLENSKY, OF FRANKFORT-ON-THE-MAIN, GERMANY, ASSIGNOR T0 THE CORPORATION 0F DELLWIK-FLEISCHER WASSERGAS GESELLSCHAFT M. B. E., OF lIFR/ANKIFORT-O'N'JlI-EI]-MAIN, GERMANY,

WELDXNG APPARATUS.

engineer` a subject ot the Austro-Hungarian Enijwror,y and resident oi .Frankfort-ontlici\laiii, (,ierlnany, (whose post-office address is, llvielandstrasse No. 40,) have invented ,new and useful Improvements in folding \p paratus, ofkwhich the. following lnvthe usual welding processes the closin ar otf the joint iscii'ected either by ham- The {irai/oli these treatments has the drawback that the metal may be rendered too thin by the-lninimering,4 and the article made too weak at the welded joint. ln addition the rions-ly ailfccts thc life of the burner blocks in the case otweldin-g with gas tlame.- ln welding by the aid of' presses or press rollers or `suitably disposed eccentrics, it .is true that. a quieter and more uniform pressure is exerted, but inthis case the slag is often impericctly 'forced out and the overhcated, and therefore crystalline,.material is not sulleient-ly wm'hed'to render it tough again. The new apparatus, which is specially inteiulerl lor welding pipes, but may also be y-applied to other welded articles, admits of -ingtreatn'ient.

sure of 'etiect can beproduced by a rapidly alter` 4nating vibratory,I pressure, for example by jspeedv corresponding'to that of vpneumatic v the coinbiiuition of the two methods of treatment ina special manner and thus obviates,` the defects of both, The welding is performed under aiiuctuating pressure, which has one constant factor, corresponding to the old pressing pressure, and in addition a rapidly started and terminated increase of this pressure corresponding to the hammerl ln this way an eliect is produced which in the augmentation and brought about in various ways. For eX- ainple the pressure roller may be subjected to a constant pressure, e. g. of a press cyl inder, and then blows may be struck on this pressure roller by a hammer, the pres which blows is Aadded to the steady pressure of ther press. Moreover, a kneading Specification of Letters Patent.

, rollers e,` f`,; the latter oiseau inte j y iate member such as gi` 110 @e weer;

"like operated by,A a

press cylinder, being preferably introduced between the hammer and the work, since the ram of a high-speed hammer does not ,move up and down but remains always in place, so that it is impossible to move the welded joint along, at welding heat, immediately under the ram. l

In the accompanying drawing the apparatus is illustrated in its application to, the welding of a pipe.

Figure l is a longitudinal section; Fig. 2

Application filed February 2, 1910. Serial No. 541,597.

.. To 1UI whom. t muy (sonreir/2 l Be it known that I, EUGEN DoLENsKY,

a cross section and Fig. 3 a plan view of a" welding device for pipes.

a is a pipe resting on adjustable carrier rollers b and adapted-to be moved inthe dircction of its longitudlnal axis by means of a draft chain c. Into the pipe extends an anvil Z the front end of which carries a roller or abutmentve, and alongside the anvil Patented oer. 29,1912. y

are thev gas and air pipes which lead into the interior burner g, which is situated' op-k i posite to the exterior burnerAh. A roller or abutment f works in conjunction with the roller or abutment e, and isinounted in'a fork 7i of the press piston rod m; The press sure medium is admitted into the top or bot-tom of the press cylinder n by operating a lever nl, the roller f being thereby lowered or raised. The piston rod m projects through the top of the press cylinder fnand is subjected to the action of a hammer p. The hann'ner cylinder g, is suspended in the known manner from a rope g1 and: can be raised or lowered by the' lever g2. When it is lowered into. contactwith the endvsurfac'e of the piston rod fm, itbegins to work automatically, in the lmown manner, under the sofy influence of the pressure mediumgenterng the cylinder g through the` flexiblepipefr.

The carrier rollers b rest on rocking vquadrants s which can beraisedl and lowered by means of the rack work t`1 and worm gear' u operated by the hand'wheel o.. In the operation of'welding a pipe with the closmgof the jointy to a relatively unit pressure oiifythejv t i I the above apparatus, themeeting edges of. the metal 'are heated inthe "well known way by the gas llames emitted from the interior eration, @nel desired value on the jcini or sf seryto @mme the effet; nercinbeiiore mentioned is imparted by the hammer devise gs, 5 5 which as sc controlled hy the ccnncc- 'tions described to act up'on the. pasten rccl. fm and roller f with a hammer zrcticn cf the desired strength, rupi( ty, :anni diiratinn. There is therefore ccn'slant or the .in which cffec'tually closes the joint, und in addition thereto an intermittent cr uctunling pressure 0f the clesire 'fallin which prniluces7 with first named iie ai linezring of metal nich Gives the lutter the necesn i. ing; 'n the dersi'ocd that Now what claim and desire tc scciire liv eration, and rneqs for exertmg :in auxiliary increaseil intr ent pressure thereon of a rapidly-recurring frequency. whereby chir- `ing the welding cnerntion the metal to be L Welded 'is subjected to uninterrupted pressiire and tu auxiliary intermittent higher pressure aeoiiipanieti by nn fiction endo gens t0 irneaiding.

In e, Welding :rmxstratus7 jcintheatinp; evice, fluid pressuremecns 'r ccnsanliy maintaining pressure on the joint during the weidingcperstion, and means 'for inte-1 mittently varying the pressure with mpiidljyv` recurring frequency whereby during the Welding operation the metal tc 'be Welded is subjected simultaneously tc pressure and tc an action analogous to lmeading.

e. ln n Welding apparatus, a joint heating rie-Vice, rollers between which thc joint to be wclrled passes, menus for ccnstnntly innintuining pressure between thc rollers :nul thc jnint during the Welding Operation, and means for exerting :in auxiliary intermit- 'leni pressure thereon of rapidly-rccurring frequency, wl'ierehy (hiring the Welding 0psriiticn the metal to he welded is sul'iieclcd to uninterrupted pressure und t0 an auxiliary intermittent higher pressure accompanied by un action analogous to lincniling.

in n welding appui-:ilus a juiul limiting copcrating slinitmenl's between e joint to lic welt-loll passif# menus nnly nniintnining pressure lictwccn nime-nts :uni thejoini lui-ing (hc Opernicn, und incluis for intcrniil- '7 7 rurjting the pressure with rapidlyrcrurring icrvqiuyu'y7 whereby liu-iner the welding (poration the nlciul iu lic wclilcil is subjected tu imintcrruptcd pressure nml lu an auxiliary intermittent higher pressure accompanied by un nation analogous tu lineacling. t In :i welding;ripparatus, a janet-heating nevica, ,coperntmg souimcnts between which the joint io De welded 'pass-cs; u fluid pressure device fr constantly uminiuining pressure between the r-.lnitmcnls and thc ju' it during the Welding' tn icrznicn, und u reciprocating hammer device for exerting un auxiliary in reused intermittent in'cssurc of rapidly-recurring 'frequency on the joint, whereby lm-ing the welding operation the incnl to be welded is subjected tu unini'ei# rupted pressure and to un auxiliary intermittent highcr pressure siccouil'isnicd by an action analogous to lncfiding.

'l'. In an ain'inreztus vfor wielding, the com- 4ininntion of n heating device, rollers between which the joint to be welded passes, und. u hammer acting cn the rollers.

ln testimony, 'that .il claim thc cregninfr as my invention, have signed my naine in }-'i escnce uf two Witnesses, this 20th day of January 1910.

` *IGEN D LENSK Y.

wlWitnesses BERNHARD Srm'snn, HEINRICH EMMERIQH. 

